Home / 14,715.50-20,307.40-8,091.50

Finding the Fourth Proportional to 14,715.50, 20,307.40 and 8,091.50

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Solution

The fourth proportional to 14,715.50, 20,307.40 and 8,091.50 is: 11,166.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,715.50 : 20,307.40 = 8,091.50 : x
  2. Step 2: Convert to fraction form
    14,715.50/20,307.40 = 8,091.50/x
  3. Step 3: Cross multiply
    14,715.50x = 20,307.40 × 8,091.50
  4. Step 4: Simplify right side
    14,715.50x = 164,317,327.10
  5. Step 5: Solve for x
    x = 164,317,327.10/14,715.50
  6. Step 6: Final answer
    x = 11,166.28

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.